All Versions
This page provides access to older versions of Mozilla Firefox Beta for Windows, including 10 previous releases available for download. Previous builds can be useful if the latest version does not work correctly on your system or if you need a compatible release for your setup. Browse the versions below and download the one that best fits your requirements.
153.0b9
Latest
85.51 MB
July 7, 2026
d9787bd2…
Download
152.0b3
84.63 MB
May 26, 2026
7e3e0e8f…
Download
150.0b3
83.49 MB
March 31, 2026
e7222f18…
Download
149.0b3
82.76 MB
March 3, 2026
9ac41056…
Download
148.0b1
84.03 MB
January 13, 2026
5aa594a1…
Download
147.0b4
82.62 MB
December 16, 2025
5830b292…
Download
147.0b1
82.71 MB
December 9, 2025
625eeedb…
Download
146.0b1
82.68 MB
November 11, 2025
bf3e0100…
Download
145.0b7
81.87 MB
October 28, 2025
ebd78530…
Download
145.0b3
82.34 MB
October 20, 2025
aa1579b2…
Download